Use pliers to squeeze the clamp a move it two inches toward the battery.
Slide hose off of nipple.
HyperSprite Tech:
Motordyne Engineering 1/4" Plenum Spacer install in the 350Z
Disclaimer: HyperSprite.com is not responsible for damages you cause to or with your car during or after performing this service.
While we feel the service is perfectly safe and the method follows factory procedure, you are responsible for the outcome.
Please tune responsibly.
The spacer arrived in the mail properly packaged to avoid damage. Pulling it
out and laying it out on the bench shows they have done there homework on the
kit, everything you need is in there.
In the box:
The 1/4" Spacer
Top gasket (stock gasket cut special to fit)
6 1/4" mini spacers for the 6 internal standoffs, they have gaskets bonded to
them.
Bolts to replace the now too short stock bolts on the plenum and strut bar.
8 strut bar spacers.
Full installation should take about one hour at a relaxed pace. Read through all of the instructions before starting.
Remove the strut bar
Loosen the two jam nuts on the left hand side.
Mark the center and loosen it one full turn.
Remove the 6x14mm head bolts and 2x14mm head nuts.
Use a screw driver on the lock of the slide on wire connector and slide off.
Use needle nose pliers to squeeze the snap in wire connectors and push them out.
Carefully lift bar out of the way and set aside.
Remove engine cover
Remove the 2x10mm head nuts and 2x10mm head bolts.
Carefully lift cover and set aside.
Disconnect the "Z tube" from the throttle body.
Loosen the clamp and pull back carefully. If stock it may be easier to remove the whole Z because of the banjo hose.
Disconnect the vacuum line on the battery side of plenum (see picture)
Use pliers to squeeze the clamp a move it two inches toward the battery.
Slide hose off of nipple.
Take off oil filler spill guard
Remove oil cap
Pull off spill guard (to avoid getting it clamped up in you plenum)
Replace oil cap
Loosen and remove all plenum bolts
Remove all 16x10mm head bolts and 2x10mm head nuts in opposite of tightening direction (see picture further down)
Spacer install
Caution : Care should be taken not to drop anything into the intake manifold.
Clean the plenum top and around it's edges to remove any dirt or debris.
Lay the spacer on top of the plenum to find the correct orientation, lay the gasket on top of that, the twin arrows should be resting just above the matching ones already on the car.
Lift the plenum and clean the riser post with alcohol or brake cleaner applied to a rag.
Lift the plenum enough to get spacer and gasket in place and make sure the gasket is still lined up
Using the new long bolts and medium bolts as a guide, put on the 6 riser spacers.
Take out the two studs in the lower spacer.
Replace upper plenum, make sure the gasket and spacers all stay in place.
Tighten all the bolts in forward order to 9 to 10 foot lbs. (see picture below)
Installed the rest in reverse order of disassembly, remembering to add the strut spacers for the strut bar.
This is a picture of the 1/4" spacer installed, there are no hood or strut
bar clearance issues so even an informed inspector may not notice.
